Michael Phelps stepped out with Megan Rossee on his arm last night in London.

The newly-retired Olympic swimming legend, whose work in these games (and all future games) is done, made his red carpet debut with his very pretty, newly-revealed girlfriend Monday at an event for Speedo, one of Phelps' primary sponsors.

Missy Franklin and Michael Phelps, two U.S. standouts from the first week of the London Olympics, each leaped back in to the pool this afternoon in hopes of adding to their already-impressive medal count.

Did they succeed? NBC will air the races tonight, so stop reading now if you wish to be surprised on television...

You can't blame Michael Phelps' mom Debbie for thinking he had this one.

The best swimmer ever held a half body-length lead in the final 15 meters of Tuesday's 200-meter butterfly, a race he hadn't lost in a major competition since 2001, when he obliterated the world record he still holds.